A pressure-sensitive display screen touch-control unit, a touch screen and a manufacturing method thereof. The touch-control unit mainly comprises a driving electrode, a lower electrode, and a dielectric layer sandwiched between the driving electrode and the lower electrode. When a pressure is applied between the driving electrode and the lower electrode, a tunnel current IT is formed, and a voltage VT exists between the driving electrode and the lower electrode. With the touch-control unit, an external pressure may be converted into a current signal to make pressure an information input mode; and the touch-control unit is combined with the existing capacitive touch screen or the resistive touch screen, such that the touch-control unit may be compatible with the existing multi-point touch function, and may also sense change in pressure sensitively. Functions of the existing touch screens may be enhanced to rich operations and applications of touch screens.
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2. The capacitive touch screen according to claim 1 , wherein the driving electrode and the lower electrode are transparent or semi-transparent conductors, and are made from any one of indium tin oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped zinc oxide (FTO), gallium-doped zinc oxide (GZO), graphene and metal nanowire array.
4. The resistive touch screen according to claim 3 , wherein the driving electrode and the lower electrode are transparent or semi-transparent conductors, and are made from any one of indium tin oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped zinc oxide (FTO), gallium-doped zinc oxide (GZO), graphene and metal nanowire array.
5. A method for manufacturing a resistive touch screen as defined in claim 3 , the method comprising: forming the first resistive film on the hard substrate of the touch screen; forming the second resistive film at the lowest end of the soft substrate; combining the soft substrate and the hard substrate by an insulating fulcrum; wherein before the second resistive film is formed, first, an array of the driving electrode and the ultra-thin dielectric layer is formed on the soft substrate; and then, the lower electrode is formed; and finally, the array is covered by an insulating film; and manufacturing the dielectric layer by atomic layer deposition or molecular layer deposition, a thickness of the dielectric layer being between 0.5 nm and 5 nm; wherein the dielectric layer is made from polyamide, polyimide, poly(p-phenylene terephthamide), polyurea, aluminum oxide, zirconium oxide, hafnium oxide, silicon dioxide, aluminum alkoxide or Zincone.
6. A method for manufacturing a resistive touch screen according to claim 5 , wherein the driving electrode and the lower electrode are transparent or semi-transparent conductors, and are made from any one of indium tin oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped zinc oxide (FTO), gallium-doped zinc oxide (GZO), graphene and metal nanowire array.
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December 11, 2014
February 11, 2020
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